All plugins not sending emails?

there are no wpmudev plugins that tell me to setup smtp?

I’m just using wpmudev plugins and all plugins do not send emails. When users create a site, it says you need to confirm the site setup by email and nothing gets sent, also messaging plugin does not send emails when friends send messages?

There used to be an smtp setup for the basic wordpress under settings using just wordpress config, but that is gone sense a multisite install?

what wpmudev plugin sets up smtp? I have not found one yet?